colouring-montreal/app/src/frontend/sidebar.css

.info-container {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    bottom: 3rem;
    padding: 0.25em 0em;
    background: #fff;
    background-color: rgba(255,255,255,0.98);
    z-index: 1000;
    overflow-y: auto;
}
.info-container .h2:first-child {
    margin-bottom: 0.5rem;
    margin-top: 0.5rem;
    margin-left: -0.1em;
    padding: 0 0.75rem;
}
#root .leaflet-container .leaflet-control-attribution {
    width: 100%;
    height: 3rem;
    background: #fff;
    background: rgba(255, 255, 255, 0.7);
}
.leaflet-right{
    left: 0;
}
@media (min-width: 380px){
    .info-container {
        bottom: 2rem;
    }
    #root .leaflet-container .leaflet-control-attribution {
        height: 2rem;
    }
}
@media (min-width: 768px){
    .info-container {
        top: 0;
        left: 0;
        width: 20rem;
        bottom: 0;
    }
    .leaflet-right{
        left: 20rem;
    }
    #root .leaflet-container .leaflet-control-attribution {
        height: auto;
    }
}

.sidebar-header .h2 {
    display: inline-block;
}
.sidebar-header .icon-button {
    margin-left: 0.25rem;
    margin-top: 0.4rem;
}
.sidebar-header .icon-button:hover {
    background-color: #eee;
}